Create //chrome/browser/ash directory for lacros

This is the target directory for //chrome/browser/chromeos code. See
bug for migration plan. Since the code is moving, not changing, clone
the DEPS file as-is to avoid bothering OWNERS.

Bug: 1164001
Change-Id: Ie15d4faff0d235110a49a103fb780f5940e66a8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2616101Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841182}

chrome/browser/ash/DEPS

+include_rules = [
+  "+chrome/browser/image_decoder",
+  # TODO(ananta): Remove this when we move files which display UI in
+  # chrome/browser/chromeos to chrome/browser/ui/views/chromeos
+  # crbug.com/728877
+  "+chrome/browser/ui/views/chrome_layout_provider.h",
+
+  "+chrome/services/keymaster/public",
+  "+chrome/services/wilco_dtc_supportd/public",
+  "+components/account_manager_core",
+  "+components/full_restore",
+  "+components/guest_os",
+  "+components/services/app_service/public",
+  "+cros",
+  "+dbus",
+  "+device/bluetooth",
+  "+media/audio/sounds",  # For system sounds
+  "+media/base/media_switches.h",  # For media command line switches.
+  "+media/mojo/mojom",  # For platform verification mojom interface.
+  "+remoting/host/it2me",  # For CRD host in remote command
+  "+services/device/public",
+  "+services/metrics/public",
+  "+services/network",
+  "+services/tracing/public",
+  "+services/viz/public/mojom",
+]
+
+specific_include_rules = {
+  # Dependencies specific for fuzz targets and other fuzzing-related code.
+  ".*fuzz.*": [
+    "+third_party/libFuzzer/src/utils",  # This contains FuzzedDataProvider.
+  ],
+  ".*test.*": [
+   "!ash",
+   "+ash/public",
+  ],
+  "assistant_util_unittest\.cc": [
+    "+ui/events/devices/device_data_manager.h",
+  ],
+  "child_status_collector_browsertest.cc": [
+    "+mojo/core/embedder/embedder.h",
+  ],
+  "chrome_browser_main_chromeos\.cc": [
+    "+ash/shell.h",
+    "+ash/sticky_keys/sticky_keys_controller.h",
+  ],
+  "device_status_collector_browsertest.cc": [
+    "+mojo/core/embedder/embedder.h",
+  ],
+  "event_rewriter_unittest\.cc": [
+    "+ui/events/devices/device_data_manager.h",
+  ],
+  "external_protocol_dialog\.cc": [
+    "+chrome/browser/ui/views/external_protocol_dialog.h",
+  ],
+  "file_manager_browsertest_base.cc": [
+    "+chrome/browser/ui/views/extensions/extension_dialog.h",
+    "+chrome/browser/ui/views/select_file_dialog_extension.h",
+  ],
+}

chrome/browser/ash/OWNERS

+# //chrome/browser/chromeos is moving to this directory, so share OWNERS.
+file://chrome/browser/chromeos/OWNERS

chrome/browser/ash/README.md

+chrome/browser/ash
+==================
+
+This directory should contain non-UI Chrome OS specific code that has
+`chrome/browser` dependencies.
+
+As of January 2021, code from
+[`chrome/browser/chromeos`](/chrome/browser/chromeos/README.md) is migrating
+into this directory, as part of the [Lacros project](/docs/lacros.md).
+
+Googlers: See go/lacros-directory-migration for more details.